rbrucecarter5 said:
I know it sounds like I am picking on Mexico, which probably has something to do with the fact that on just about any frequency out of town (Houston), the dominant language is Spanish. Since Houston is at least 300 miles from Mexico, it seems to me that a whole lot of Mexican stations are pumping power over the US uselessly. If they re-directed that power over their intended audience, they would probably better serve them.
Well, if you go the same distance into Mexico, you will hear about as many English language stations there as you hear Mexican stations where you are now. That is because, at least in theory, the NARBA treaty that has been in effect for 70 years pretty much leveled the playing field and gave each area of North America a distribution of clear, regional and local signals.
A 5 kw station in Houston like KILT or KPRC will put some signal into Mexico, just as a 5 kw station from Nuevo Laredo or Reynosa or Monterrey will put some signal into Houston. It's just the way AM works. Fortunately, today, since so little radio listening... and even less AM listening... takes place at night, it really no longer matters what signals you hear on channels that are not licensed in your own metro or community.
And, as Fred mentioned, a large number of Tejas stations are in Spanish... some of what you are hearing is coming from US stations in Tejas's heritage language.
No doubt those near the Northern border bemoan the Canadian invasion, but at least it isn't a foreign language. Unless they are getting Quebec stations. Either way, I don't speak foreign and wish they would keep their signal over their intended coverage area. And - US stations should do the same.
First, the fact that AM signals don't have to show a passport at the border is not an invasion. It's just the nature of propagation.
When I owned stations in Quito, Ecuador, nearly every channel not used locally had a station from Colombia on it. And some of the local stations even had interference on their own channels inside the market! Since there was no treaty between the two bordering nations, there was nothing to be done. And since Colombia had a far more developed radio industry, most of their stations overpowered most of ours.
North America has a long-standing treaty among most of the nations in the hemisphere, and the coverage and powers of the stations in each meet the terms of the agreement. If you can hear Mexican stations in the US, it's because the treaty allows the Mexican stations to have that degree of power and coverage. And the same goes for hearing US stations in Mexico.
As to Spanish being "foreign" it was the first European language in the Southwest... English came later. And in Puerto Rico, USA, it's the preferred language and the one 120 of the 122 stations on the Island broadcast in.